Gun-carriage



NITE STATES Fries,

ATEN

GUN-CARRIAGE.

SPECIFICATION forming part of Letters Patent No. 318,239, dated May 19, 1885.

Application filed November 24, 1884. (No model.)

To all whom it may concern.-

Be it known that I, FRANS O. EKHOLM, of Chicago, county of Oook,and State of Illinois, have invented certain Improvements in Gun- Oarriages, of which the following is a specification.

My said improvement relates to certain devices for mounting, supporting, and operat ing guns upon boats and vessels afloat upon water, which will be hereinafter fully described with reference to the accompanying drawings, in which- Figure 1 represents a central vertical section of a stationary turret mounted upon the deck of a boat with my improvements in connection therewith; Fig. 2, a plan of the turret and of the annular bar 0, a portion of the latter being broken away; Fig. 3, a bottom view of the revolving turret which immediately supports the gun, in which are displayed the grooved rollers q and a section of the center bolt, K; Figs. 4, 5, 6, and 7, detail views of parts.

Reference is here made to my application, No. 143,512, for a patent for guncarriages, filed September 19, 1884.

In the drawings, M represents the stationary turret standing on the deck of a boat. It is provided with a ledge extending entirely around it, which supports the feet of the studs P, upon the top ends of which rests the an nular bar 0, which surrounds the turret, and which itself is a plain rectangular bar, except that on its lower side it is provided with a wide groove, as shown, into which the top ends of the studs P enter, and in which they are confined. The making of this groove re sults in the formation of downward projections or tongues of the material of the bar 0, one on each side of the groove, as shown, and these I utilize as the means of confining the box I upon the bar, so that it cannot come off the same when in use; but it may move around upon the same and make a complete circuit upon it. The shell of the box I is preferably made of metal, and is made to extend and hook around the lower corners of the bar 0, which is also preferably made of metal, and in order to confine the boX to any horizontal adjustment upon the bar the hinding-screw k turned through a hole in the box against the bar will effect that object.

In order to elevate and depress the muzzle of the gun, a vertical bar, G, provided with teeth a, (shown on an enlarged scale in Fig. 5,) is hinged at its upper end to the breech of the gun, as shown in my said other application, while the lower end passes down through a suitable vertical chamber for it in the box I, and by means of the pinion p it is operated vertically by the use of the hand-wheelj, the hand-wheel and pinion being on the same shaft, the shaft having its bearings in the box. Thus the muzzle of the gun is made to sweep the whole horizon, and also can have any vertical adjustment that may be needful.

The top of the stationary turret is provided with the upwardly-proj ecting flange m, in order to hold in position the revolving turret B, which carries the gun, and it is also provided with a circular V-formed rail, 8, and the revolving turret B is provided with a series of grooved pulleys, q,corresponding with the rail, to prevent friction, as much as may be, in the revolving motion of the upper turret. The two turrets are connected and held together by the center bolt, K, having a head, k, ft the upper end, and a nut, 25, at the lower en In order that the box I may be put on and off the annular bar 0, as required, the latter is made with a removable section, It, which, as shown in Figs. 2 and 7, is provided with dovetail tenons at each end, which are fitted into corresponding mortises in the adjoining parts of the main portion of the bar, and the part R,when in position, is held down by two screws, W, as shown.

What I claim as my invention, and desire to secure by Letters Pateut,is

1. In combination with the revolving gunsupport B, carrying in its base the grooved anti-friction rollers q, the stationary turret M, having a circular V-shaped tread for the rollers q, and a flange, m, which encircles and supports the revolving gun-support B, substantially as and for the purpose described.

2. In combination with a gun, its support ing-turret, the studs P, borne thereby, the annular bar grooved underneath and supported by such studs, the box I traveling on such tion between the rack bar and the breech of bar, and the gun-elevating mechanism supthe gun, whereby the gun may be both ele- IO ported by such box, substantially as set forth. vated and traversed 011 its stationary support,

3. In combination with a gun and its turall substantially as set forth.

5 ret, having an annular bar supported about FRANS O. EKHOLM.

it, a box, I, traveling on the bar, and having Vvitnesses: a vertical chamber for the support of a rack- ALEX. M. STOUT, Jr., H bar and its operating-gear, and a 1ink-eonnec- FREDERICK O. GOODWIN. 

